Washington Lakes With Coho salmon

18 counted Washington lakes list Coho salmon in Washington DFW records. The largest is Lake Umatilla at 50,042 acres.

#	Lake	County	Surface Area	Max Depth
1	Lake Umatilla	Klickitat	50,042 acres	-
2	Lake Wallula	Benton	26,343 acres	-
3	Lake Washington	King	21,992 acres	-
4	Riffe Lake	Lewis	11,224 acres	-
5	Lake Pateros	Douglas	8,376 acres	-
6	Lake Entiat	Douglas	7,171 acres	-
7	Lake Sammamish	King	4,852 acres	-
8	Swift Reservoir	Skamania	4,586 acres	-
9	Lake Merwin	Clark	3,837 acres	-
10	Vancouver Lake	Clark	2,287 acres	-
11	Mayfield Lake	Lewis	2,021 acres	-
12	Silver Lake	Cowlitz	1,989 acres	About 10 ft
13	Big Lake	Skagit	536 acres	-
14	Lake Scanewa	Lewis	388 acres	-
15	Wildcat Lake	Kitsap	109 acres	About 32 ft
16	Bosworth Lake	Snohomish	102 acres	About 79 ft
17	Horseshoe Lake	Clark	83 acres	About 14 ft
18	Haven Lake	Mason	69 acres	About 30 ft

Source: Washington DFW lake data. Verified October 30, 2026.